UPDATE 2-Russia's IES bids for entire TGK-7 issue - CEO

(Adds UES expectation of price and demand for TGK-7 sale in paragraphs 4-6)

By Simon Shuster

MOSCOW, Feb 28 (Reuters) - Russia's Integrated Energy Systems (IES), an investment vehicle for billionaire Viktor Vekselberg, is bidding for the entire additional share issue of power generator TGK-7 (VTGK.MM: Quote, Profile, Research), IES's head said on Thursday.

IES has been in talks with gas export monopoly Gazprom (GAZP.MM: Quote, Profile, Research) to bid jointly for control of TGK-7, but Slobodin declined to give details of the negotiations.

"In our field, in electricity, in energy, it is impossible to work without having at least some contact with Gazprom," he said on the sidelines of a press briefing.

TGK-7's parent company, Unified Energy System (UES) EESR.MM, said on Thursday the sale of TGK-7 will be oversubscribed and will have a price range well above the market price.

"I can say that the price range will be significantly above market ... We are expecting an oversubscription," said Vladimir Avetisyan, the head of UES's Business Unit No. 2.

He said the investment banks organising the placement, Troika Dialog and Merrill Lynch, will announce the price range on Friday.

The Federal Anti-monopoly Service has not yet approved the acquisition, but Slobodin said he expects it within days.